Car-underframe.



S. HANSSON & l. MUELLER.

CAR UNDERFRAME.

APPLICATION FILED 1ULY1 4, 1914.

Patented Dec. 21, 1915.

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WITNESSES COLUMBIA PLANOGRAPH CO.,WASH1NGTON, 0. c4

S. HANSSON 3: I. MOELLER.

CAR UNDERFRAME.

APPLICATION FILED JULY 14, 1914. V L164$ Patented Dec. 21, 1915.

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SOREN HANSSON AND ISAK MUELLER, OF NEW GLASGOW, NOVA SCOTIA, CANADA, ASSIGNORS OF ONE-THIRD TO HENDERSON B. DOUGLAS.

CAR-UNDERFBAME.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filed July 14, 1914. Serial No. 850,940.

To all whom it may concern:

Be it known, that we, SOREN HANSSON and ISAK MOELLER, residents of New Glasgow, in the Province of Nova Scotia', Dominion of Canada, have invented a new and useful Improvement in Car-Underframes, of which the following is a specification.

This invention relates to car underframes, and particularly to car under frames formed of structural steel, and suit able for use on freight or passenger railway cars.

The object of the invention is to provide a strong, rigid and durable car under-frame which may be readily constructed, which is simple, which is composed of a comparatively small number of parts, which is much lighter than other similar under-frames, and which is very strong in proportion to the amount of metalused.

The invention comprises the construction and arrangement of parts hereinafter described and claimed.

In the drawings, which represent one embodiment of the invention, Figure 1 is in part a plan view and in part a horizontal section on the line 11, Fig. 2; Fig. 2 is a central longitudinal sectional elevation thereof; Fig. 3 is an elevation of the end sill; Fig. 4 is a view, showing at the left a cross section on the line 4-1, Fig. 1, and at the right a similar section on the line e e Fig. 1; and Fig. 5 is a sectional elevation, the left half being taken on the line 5-5 and the right half on the line 5 -5 Fig. 2.

The car under-frame shown in the drawings comprises side sills 1, end sills 2, a center sill 3, cross bearers 4, body bolsters 5,

member8 which extends from a point beyond one of the body bolsters to a point beyond the other bolster. The upper sill member 7 is shown as formed of three channel members, a central longitudinal stringer 9, whose web is horizontal and whose flanges are connected to two side members 10, shown as channels having their flanges extending outwardly toward the side sills.

The lower sill member 8 is also a channel member whose web is horizontal and whose flanges extend downwardly. Intermediate the body bolsters the central portion of the lower sill member is depressed in order to increase the beam eflect. The center sill is in effect a box girder, as its upper andlower members 7 and 8 are connected at the sides by plate metal covers 11 which are riveted to said members and are made in sections and flanged up for connection to the body bolster 5 and cross bearers 4:.

The lower member 8 of the center sill extends beyond the body bolster 5 toward the adjacent end sill, where it is riveted or otherwise connected to the draft sill 12, which is shown as formed of two pressed plate metal members of substantially 2 form with its sides spread apart and riveted to the upper sill member 7, thereby giving extra space for the standard draft rigging.

The body bolster 5 is preferably a pressed plate metal member, which may be assembled from several parts, but preferably is a single integral member extending clear across the car from side sill to side sill. As shown the body bolster is pressed from a single flat plate or sheet into substantially channel or U-form, the upper edges being flanged over for connection at their ends to the side sills, as shown at 13. Said body bo-lster projects through the center sill, passing between the upper and lower members 7 and 8 thereof, to which it is securely riveted.

The under-frame may also be provided with a center plate 14, which is shown as riveted directly to the lower member of the center sill where the bolster crosses the same, and which is held between the downwardly extending side flanges of the lower member S of said sill, said flanges therefore acting as a side guide and holding device for the center plate. The under-framemay also be reinforced by suitable gusset plates 15 riveted t0 the upper faces of the center sill and body bolster, and to which may be connected diagonal braces 16, shown as angle members, but which may be of any other suitable section.

The longitudinal stringers 6 are shown as wooden beams which are bolted or otherwise secured to the end sill, to the body bolster 5, and also to the cross bearers 4, and cross ties 17, the body bolster, cross ties and cross bearers being depressed intermediate their ends, or lying below the upper edges of the side sills, in order to leave space for the longitudinal stringers. The cross bearers i are shown as channel members which are continuous from side sill to side sill and which pass through the center sill between the upper and lower members thereof, being connected thereto and to the side sills by suitable angle connections. Preferably the plates from which the cross bearers are formed are made somwhat wider at their middle portions adjacent the center sill, so that the cross bearers are deeper nearer the center sill than at their outer ends, which increases the strength and reinforces the under-frame. The cross ties 17 may be any suitable section but preferably are 2 bars which extend through openings in the side tie plates 11 of the center sill and are continuous clear across the car and are connected at their opposite ends by angles or the like to the side sills.

It is, of course, to be understood that the exact structural shapes described are not essential to the invention, as other shapes may be 'as readily employed as those described.

The car under-frame described is simple and may be readily assembled at low cost. It has maximum strength for the amount of metal employed and materially reduces the labor cost of erection. It is amply reinforced by the continuous longitudinal centersill extending from end to end of the car and by the continuous cross members, such as the body bolster, cross ties and cross bearers. It conforms to all standard requirements and is very durable and not liable to be injured by the racking strains of service.

What we claim is lfA car under-frame, comprising side sills, end sills, a center sill, and continuous body bolsters and cross bearers connecting said side sills, the center sill comprising upper and lower channel members of which the first named lies above the body bolster and is continuous from end sill to end sill and the second named lies below the body bolster and is continuous and is longer than the distance between the body bolsters.

2. A car under-frame, comprising side sills, end sills, a center sill having a continuous upper channel member extending from end sill to end sill, a channeled lower center sill member, plate members connecting the flanges of the upper and lower channel members of the center sill, and cross members connecting said side sills and extending between the upper and lower channel members of the center sill.

3. A car under-f'ame, comprising side sills, end sills, a center sill comprising upper and lower channel members with their webs horizontal, the lower member being disposed intermediate the end sills, plate members connecting the flanges of the upper and lower center sill members, and body bolsters extending through the center sill between the upper and lower members thereof and continuous from side to side of the car.

4. A car under-frame, comprising side sills, end sills, a center sill consisting of upper and lower channel members, the upper members extending continuously from end sill to end sill, and a continuous body bolster extending from side sill to side sill and secured intermediate its ends between the upper and lower center sill members.

5. A car under-frame, comprising side sills, end sills, a center sill extending continuously from end to end of the car, said center sill comprising upper and lower channel members with their webs horizontal, and a continuous body bolster extending from side sill to side sill and passing between the upper and lower center sill members and secured thereto.

6. A car under-frame, comprising side sills, end sills, a center sill extending continuously from end to end of the car, said center sill comprising upper and lower channel members with their webs horizontal, and a continuous body bolster of channel form passing between the upper and lower center sill members and having upper flanges and a bottom secured to the center sill members.

7. A car under-frame, comprising side sills, end sills, a center sill consisting of upper and lower channel members with their webs horizontal, the upper member extending continuously from end sill to end sill and the lower member at each end ex tending beyond the body bolster, vertical plate members connecting the flanges of the upper and lower center sill members, and a continuous body bolster extending from side sill to side sill between the upper and lower center sill members and secured thereto.

8. A car under-frame, comprising side sills, end sills, a center sill consisting of upflanges and a bottom secured respectively to per and lower channel members with their the upper and lower center sill members.

Webs horizontal, the upper member extend- In testimony whereof, we have hereunto ing continuously from end sill to end sill set our hands.

5 and the lower member at each end extendin beyond the body bolster, Vertical plate mem bers connecting the flanges of the upper and lower center sill members, and a continuous Witnesses:

body bolster of channel form extending JENNIE L. GRANT, 10 from side sill to side sill and having upper GEORGIE V. GRANT.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

